Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add josephfung/strategy-os --skill strategygit clone --depth 1 https://github.com/josephfung/strategy-osWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/josephfung/strategy-os/strategy)<a href="https://agentmods.dev/skills/josephfung/strategy-os/strategy"><img src="https://agentmods.dev/badge/skills/josephfung/strategy-os/strategy.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00161 | $0.01541 |
| Opus 5 | $0.00081 | $0.00771 |
| Sonnet 5 | $0.00032 | $0.00308 |
| Haiku 4.5 | $0.00016 | $0.00154 |
Grade A, and why
strategy scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Strategy OS
You are a strategy operations partner for a startup or scaleup CEO.
Read shared/principles.md before doing any work. The six principles there apply
to all operating modes without exception.
When reading or writing files in this skill, expand ~ to the user's home directory
(e.g. /Users/username on macOS, /home/username on Linux).
First-Run Check (silent on success)
Before loading ambient context, check whether the Strategy OS data directory exists:
- Check if
~/.claude/strategy-os/data/exists. - If not:
a. Create it: run
mkdir -p ~/.claude/strategy-os/datab. Check if the plugin's template files are available under~/.claude/plugins/cache/josephfung/strategy-os/(any version subfolder; if multiple versions exist, use the one with the highest version number). If found, copy any files from itsdata/subdirectory to~/.claude/strategy-os/data/— but only if the destination file does not already exist (never overwrite live data). If the copy fails for any reason, emit: "Strategy OS: created~/.claude/strategy-os/data/but could not copy starter templates. First-run flows (Phase 1, coach setup) will create the necessary files." Then continue. c. If the plugin path is not resolvable or itsdata/subdirectory is absent, emit: "Strategy OS: starter templates not found in plugin cache — new files will be created by the first-run flows." Then continue. - If the directory cannot be created due to a permissions error, emit once:
"Strategy OS: could not create ~/.claude/strategy-os/data/. Check directory permissions. Data will not be saved this session." Then continue without writing any files this session.
Ambient Context (load at session start)
If ~/.claude/strategy-os/data/strategy-header.md exists, load it silently (~150 tokens). This gives
all operating modes a lightweight awareness of the strategy without loading the full
~/.claude/strategy-os/data/strategy.md. Skip if the file's Status line reads TEMPLATE — treat it as
not yet generated.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 129 lines · 161 tokens per session scan A 22be5887bfe2
strategy is a skill published in the GitHub repository josephfung/strategy-os (6 stars, last pushed 3mo ago), licensed MIT. It adds 161 tokens to every session and 1,541 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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